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家猪肝动脉内给予^(32)磷-玻璃微球的毒性反应研究 被引量:3

Acute and subacute toxic response to intrahepatic arterial administration of phosporus 32 glass microspheres in pigs
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摘要 目的 评估正常家猪肝动脉内给予32 磷玻璃微球(32PGMS) 后的急性和亚急性毒性反应。方法 10 只健康家猪经皮肝动脉内接受人类治疗剂量的32PGMS(5 只猪)、惰性31PGMS(5 只猪) ;2 只猪作全程空白对照。术后按第1 、2、4 、8 或16 周分期处以安乐死,取不同部位的肝组织进行光镜、电镜检查和超微形态计量分析。结果 给药组1、2 周肝细胞核异常率(Nabn) 和线粒体变异率( Mvar) 与其他各组比较差异均有显著性( P< 0.01,P< 0 .001);给药组第8 周与第16 周比较Nabn 无统计学意义( P>0 .20)。给药后第1、2 周异常肝细胞多见;第4 周异常肝细胞减少,血窦内皮破坏明显;第8 周异常肝细胞少见,血窦内皮修复;第16 周肝组织形态学表现正常。结论 32PGMS肝动脉给药正常肝组织宏观吸收剂量不超过190Gy 只是引起临床上允许的肝内变化,肝脏组织损伤修复的时间约8 周以上。 Objective\ To evaluate the acute and subacute toxic response to intrahepatic arterial administration of phosphorus 32 glass microspheres ( 32 P GMS) in pigs. Methods\ Through selective catheterization of hepatic artery to infuse 32 P GMS to 5 healthy domestic pigs, or inert 31 P GMS in the same procedure to other 5 healthy domestic pigs. Two pigs served as whole course blank control. One pig from each group was surrendered to euthanasis at week 1, week 2, week 4, week 8 or week 16, liver biopsies were performed in the rest pigs at the corresponding time points. Liver tissues at different sites were taken for light and electron microscopy. The ultrastructural histopathological changes were evaluated semiquantitatively. Results\ There was no different in the experimental group ( P >0.50) between the nuclear abnormality (N abn ) and mitochondrial variability (M var ) at week 1 or week 2, but revealed prominent difference ( P<0.01, P <0.001) as compared with those in other groups. In the experimental group the Nabn in tissues of week 8 and week 6 showed no significant difference ( P >0.20). The abnormal hepatocytes were easily found at week 1 or week 2. The abnormal hepatocytes at week 4 were less than those at week 1 or week 2, endothelium of the sinuses damaged prominently. The abnormal hepatocytes were scarcely seen at week 8, liver tissues repaired gradually. The histological features of liver tissue restored to normal at week 16. Conclusion Intrahepatic arterial administration of 32 P GMS at the macrocosmic absorbed dosage was less than 190 Gy, that intrahepatic change of clinically permissible extent might be induced in the liver tissue. It took more than 8 weeks for repairing the injured liver tissues and restoring its liver function.
出处 《中华实验外科杂志》 CAS CSCD 北大核心 1999年第6期521-522,共2页 Chinese Journal of Experimental Surgery
基金 江苏省科委资助项目 国家高技术研究发展计划863 资助
关键词 磷32 玻璃微球 肝动脉内 毒性反应 家猪 Phosphorus ^(32 ) glass microspheres Toxicology Hepatic artery Animal
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